A Proton exchange membrane fuel cell power system

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(11)

EP 1 947 720 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.04.2009 Bulletin 2009/18

(43)	Date of publication A2:
	23.07.2008 Bulletin 2008/30

(21)	Application number: 08005770.6

(22)	Date of filing: 15.10.1998

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International Patent Classification (IPC):

H01M 8/10^(2006.01)

H01M 4/86^(2006.01)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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Priority:

20.11.1997 US 979853

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	98953546.3 / 1040529

(71)	Applicant: Relion, Inc.
	Spokane, WA 99216 (US)

(72)	Inventors:
	Fuglevand, Wiilam A. Spokane, WA 99212 (US) Bayyuk Shiblihanna Spokane, WA 99212 (US) LLoyd, Greg A 450 Spokane Valley,WA 99216 (US) Devries, Peter D Spokane, WA 99203 (US) Lotte, David R. Spokane, WA 99217 (US) Scartozzi, John P. Clifton Park, NY 12065 (US) Somers, Grego M.ry Newman Lake, WA 99025 (US) Stokes, Ronald G Veradale, WA 99037 (US)

(74)	Representative: Somervell, Thomas Richard
	Marks & Clerk LLP Alpha Tower Suffolk Street Queensway Birmingham B1 1TT Queensway Birmingham B1 1TT (GB)

(54)	A Proton exchange membrane fuel cell power system

(57) A membrane electrode diffusion assembly (150) is described comprising a solid proton conducting electrolyte membrane (151) with opposite anode (153) and cathode (154) sides. Individual catalytic anode (161) and cathode (162) electrodes formed on the proton conducting electrolyte membrane are affixed in ionic contact with a non-catalytic electrically conductive diffusion layer (170) of a given porosity.

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